Contact Imaging Sensor Head For Computed Radiography
AssigneeLeidos, Inc.
InventorsRex David Richardson, William L. Hicks, Mark Alan Peressini
Life of this patent
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Abstract
A scan head design uses 1:1 (one-to-one) imaging micro-lens arrays to transfer the object plane X-ray image from a CR-plate onto a linear photosensor. The scan-head includes a housing having therein, an array of red light emitting diodes (LEDs), a red-absorbing filter, a microlens array, an infrared-filter, and a sensor. The housing faces the CR-plate and the scan-head is translated across the CR-plate to read out the X-ray image therein. The scan head is compact and provides for improved spatial resolution and reduced power requirements.
Claims22
A system for readout-scanning of a previously exposed photostimulable storage phosphor plate containing an X-ray image comprising:
- an array of red light emitting diodes (LEDs) oriented at a predetermined angle to the exposed photostimulable storage phosphor plate to illuminate directly both a gap-interface between the exposed photostimulable storage phosphor plate and a red-absorbing filter and a first predetermined portion of the exposed photostimulable storage phosphor plate;
- and
- an imaging array for receiving image photons emitted from the exposed first predetermined portion of the photostimulable storage phosphor plate responsive to the illumination from the array of red light emitting diodes (LEDs) and passed through the red-absorbing filter, wherein the imaging array forms the X-ray image on a sensor.
A scan-head for readout-scanning of a previously exposed photostimulable storage phosphor plate containing an X-ray image comprising:
- a housing including therein,
- an array of red light emitting diodes (LEDs),
- a red-absorbing filter including a beveled edge facing in a direction of the array of red light emitting diodes wherein the beveled edge includes a reflective coating,
- an imaging array,
- an infrared-filter, and
- a sensor;
- wherein the scan-head is translatable across the previously exposed photostimulable storage phosphor plate to read out the X-ray image therein.
Dependencies are inferred from the claim text.